2PM's Nichkhun revealed that he pretended to not understand Korean at times in the past.

On the July 11 broadcast of MBC's "Radio Star," 2PM's Nichkhun was asked, "Rumor has it that you speak Korean well enough to even use profanity, but other times you pretend you don't understand at all. Is this true?" Nichkhun answered "Yes it is true."

Nichkhun further explained that this was something he had done in the past. "Sometimes when I didn't want to do something, I listened for a while and gave them a blank look and pretended I didn't understand. But now I can't get away with doing that anymore, I've used it way too many times," he added, bringing laughter on the set. The MCs then asked him if 2PM members use profanity often, and Nichkhun boldly answered, "Yes they do."

Also on the episode was his previous 'We Got Married' partner, f(x) leader Victoria and Robert Holley as part of a special international stars episode.

Photo Credit: MBC